Weft-Backed Jacquard Fabric Color Shading Method
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Solution Overview
Problem
Traditional jacquard fabrics with a 2:1 weft-backed structure have limited color options, are inefficient to produce, and cannot be mass-produced, lacking layering and complexity in color shading effects.
Innovation Solution
A weaving method using a single-warp and double-weft structure with a 2:1 arrangement ratio of Weft A and Weft B, employing designed face and backing weaves and shaded strengthening methods to achieve color shading effects, allowing for balanced interlacement and mass production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the Wahua technique is used to increase the number of fabric colors, then the color variety is improved, but the fabric thickness increases and the yarns on the back become messy
Solution Approach 1:
The fabric structure is segmented into distinct face and back layers with different weave patterns. The face fabric uses a tight weave to display colors clearly, while the back fabric uses a loose weave to prevent messiness. This segmentation allows multiple colors to be displayed without increasing overall fabric thickness or creating messy back yarns.
Solution Approach 2:
Different local qualities are applied to different parts of the fabric structure. The face layer is designed with high-density weaving to showcase color variety, while the back layer uses low-density weaving to maintain neatness. This local differentiation enables the fabric to achieve rich color display without the drawbacks of the Wahua technique.
2Quantity of substance
If the Wahua technique is used to increase color variety, then the color number is improved, but the production efficiency deteriorates due to hand-only operation
Solution Approach 1:
The manual Wahua technique is replaced with an automated weaving mechanism that can programmatically control the interlacing patterns of warp and weft yarns. The loom is equipped with computer-controlled jacquard heads that can automatically create complex color patterns and shading effects, eliminating the need for manual operation while maintaining or enhancing color variety.
Solution Approach 2:
The weaving parameters such as yarn density, interlacing frequency, and pattern repetition are optimized to enable mass production. By adjusting these parameters, the system can produce various color effects at high speeds, transforming the hand-crafted Wahua technique into an efficient automated process that maintains color variety while dramatically improving productivity.
3Device complexity
If traditional design methods are used for 2:1 weft-backed structure, then the structure is simple, but the color richness and layering effect deteriorate
Solution Approach 1:
The design transitions from a single-plane color display to a multi-dimensional color architecture by utilizing both face and back fabrics. Different color palettes and weave patterns are assigned to each layer, creating a three-dimensional color effect when viewed from the front. This dimensional approach allows rich color expression while maintaining the simplicity of the basic 2:1 weft-backed structure.
Solution Approach 2:
The fabric is designed as a composite structure combining two different fabric layers with distinct color characteristics. The face fabric and back fabric are woven with different color schemes and interlacing patterns, creating a composite material that exhibits rich color variety and layering effects while preserving the structural simplicity of the underlying 2:1 weft-backed framework.
Data Source
AI summary
The present disclosure provides a weaving method of a weft-backed jacquard fabric with color shading effects and belongs to the technical field of weaving methods. In a single-warp and double-weft structure with a weft yarn arrangement ratio of Wefts A and Wefts B of 2:1, by designing two groups of face weaves and backing weaves and corresponding backed points and using a shaded strengthening method, two color shading effects of color shading of the Wefts A and mixed color shading of the Wefts A and the Wefts B of the fabric are achieved. A maximum number of shaded weaves is [R/N(6R−2J2−J1−3)+2], and a grade number of shaded color is less than or equal to the maximum number of the shaded weaves. The designed fabric meets the covering requirements and can be mass produced.